diff mbox series

[v3,5/7] ehci: switch to guarded DMA accesses

Message ID 20221028191648.964076-6-alxndr@bu.edu (mailing list archive)
State New, archived
Headers show
Series memory: prevent dma-reentracy issues | expand

Commit Message

Alexander Bulekov Oct. 28, 2022, 7:16 p.m. UTC 
Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
---
 hw/usb/hcd-ehci.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/hw/usb/hcd-ehci.c b/hw/usb/hcd-ehci.c
index d4da8dcb8d..b93f4d44c1 100644
--- a/hw/usb/hcd-ehci.c
+++ b/hw/usb/hcd-ehci.c
@@ -383,8 +383,8 @@  static inline int get_dwords(EHCIState *ehci, uint32_t addr,
     }
 
     for (i = 0; i < num; i++, buf++, addr += sizeof(*buf)) {
-        dma_memory_read(ehci->as, addr, buf, sizeof(*buf),
-                        MEMTXATTRS_UNSPECIFIED);
+        dma_memory_read_guarded(DEVICE(ehci), ehci->as, addr, buf,
+                sizeof(*buf), MEMTXATTRS_UNSPECIFIED);
         *buf = le32_to_cpu(*buf);
     }
 
@@ -406,8 +406,8 @@  static inline int put_dwords(EHCIState *ehci, uint32_t addr,
 
     for (i = 0; i < num; i++, buf++, addr += sizeof(*buf)) {
         uint32_t tmp = cpu_to_le32(*buf);
-        dma_memory_write(ehci->as, addr, &tmp, sizeof(tmp),
-                         MEMTXATTRS_UNSPECIFIED);
+        dma_memory_write_guarded(DEVICE(ehci), ehci->as, addr, &tmp,
+                sizeof(tmp), MEMTXATTRS_UNSPECIFIED);
     }
 
     return num;